In some cmos counters when the clock input goes low definition the counter will count. q Operation source clock. We have an unwavering drive to make and do definition things that lead to a better world. When this pin is brought to zero level, counter counts. See for example 4518 series dual counters. Datasheet 4518 cmos definition. If it is taken Hi the counter will continue to be in same state. cmos It also allows faster imaging than pixel shift imaging comprising multiple- shot images reduces vibration during image capture. 15 DESCRIPTION The 4518 Group is definition a 4- bit single- chip microcomputer designed with CMOS technology.